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JEE Main Chemistry question

ChemistrySolutionsJEE Main

A 5.25% solution of a substance is isotonic with a 1.5% solution of urea (molar mass ) in the same solvent. If the densities of both solutions are assumed to be equal to 1.0 g , the molar mass of the substance will be [AIEEE 2007]

Answer: (D)

Solution

Isotonic solutions have equal molar concentrations:

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Question ID VK-143031